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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A277652 Numerators of factorial moments of order 2 for the number of parts in dissections of rooted and convex polygons.

Table of values

n a(n)
0 0
1 0
2 4
3 40
4 312
5 2212
6 14920
7 97632
8 626080
9 3957448
10 24747948
11 153483720
12 945638232
13 5795135820
14 35357242128
15 214919392128
16 1302250826880
17 7869116134672
18 47437683195220
19 285373276253352
20 1713562776624952
21 10272384482513140
22 61489533128765784
23 367581030765071200

List of values

[0, 0, 4, 40, 312, 2212, 14920, 97632, 626080, 3957448, 24747948, 153483720, 945638232, 5795135820, 35357242128, 214919392128, 1302250826880, 7869116134672, 47437683195220, 285373276253352, 1713562776624952, 10272384482513140, 61489533128765784, 367581030765071200]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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